How did the greek and roman versions of democracy differ?

Greek Democracy was more open and equal than Roman Democracy. The Greek Democracy allowed all male citizens to vote and they could vote in any law. Actually, the Greeks believed that all men should participate in the democratic system, if they did not they were seen as useless, because of that large numbers of men were seen participating.

Roman democracy despite the fact that it was very influenced by the Greek democratic system, it was more restricted. Only men with money and property could vote and the wealthy were the ones who got elected as representatives to make laws for everyone. 

d) in the state of iowa

explanation:

an oligopoly is a term used to clarify the structure of a particular market, industry, or organization. a market is considered oligopolistic or amazingly focused when it is shared between a few companies.